package logic

import (
	"context"
	"encoding/json"

	"healthapi/internal/model"
	"healthapi/internal/svc"
	"healthapi/internal/types"
	"healthapi/pkg/errorx"

	"github.com/zeromicro/go-zero/core/logx"
)

type GetRecommendationsLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewGetRecommendationsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetRecommendationsLogic {
	return &GetRecommendationsLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *GetRecommendationsLogic) GetRecommendations() (resp *types.RecommendationsResp, err error) {
	userID, err := GetUserIDFromCtx(l.ctx)
	if err != nil {
		return nil, errorx.ErrUnauthorized
	}

	var assessment model.ConstitutionAssessment
	if err := l.svcCtx.DB.Where("user_id = ?", userID).Order("assessed_at DESC").First(&assessment).Error; err != nil {
		return nil, errorx.NewCodeError(errorx.CodeNotFound, "暂无体质测评记录")
	}

	var recommendations map[string]string
	json.Unmarshal([]byte(assessment.Recommendations), &recommendations)

	return &types.RecommendationsResp{
		Constitution:    assessment.PrimaryConstitution,
		Recommendations: recommendations,
	}, nil
}